(2014·山西太原模拟)Hiking by oneself can be fun and good for health.It may also be good for________building.
#10644
A
respect 
B
friendship
C
reputation
D
character
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As we       the big crowd, I got       from my family.
#13492
A
joined; separated
B
joined in; separated
C
joined; lost
D
joined in; missed